130 



REVIEW OF AMERICAN BIRDS. 



[part I, 



Thryopbiltis sinaloa. 



Thryophihis sinaloa, Baird, n. S. 

 Hab. N. Western Mexico. 



(Type 23,786, d.) Bill shorter than the head. Gonys straight. No scale 

 over the nostril. Tarsus longer than the middle toe. Tail well developed ; the 

 feathers broad, nearly even, the lateral only graduated ; the tip extending a 

 little beyond the outstretched feet. Wings but little longer than the tail. 



Above dark olive-brown, with slight reddish tinge ; the rump rufous or dark 

 cinnamon ; the tail feathers with a shade of the same, still slighter on the 

 outer webs of the secondaries. Tail feathers with six or eight pretty well- 

 defined narrow, transverse black bands (each about half the width or less of 

 the interspaces) ; these most regular on the outer feathers, and apt to be 

 broken near the tips of some. The outer primaries edged with grayish ; the 

 outer webs of the other quills with a series of dusky spots. The under parts, 

 lores, and a stripe over the eye are white. The feathers of the sides of the neck 

 are white, edged with black, as are the posterior feathers of the superciliary 

 stripe running into this neck patch. The ear coverts are grayish-white, ob- 

 scurely and faintly edged with dusky. The flanks are plain brown, rather 

 lighter than the back. The under tail coverts are white, with three or four 

 well defined black bands, not quite so wide as their interspaces, and suflfused 

 along their edges with reddish-brown. Bill light horn color; the lower 

 mandible, except the tip, whitish. Legs lighter than the bill. 



(23,786, male.) Total lengthy 5.00 ; wing, 2.45 ; tail, 2.15 ; graduation, .22 ; 

 exposed portion of 1st primary, .90, of 2d, 1.30, of longest, 4th (measured 

 from exposed base of 1st primary), 1.80 ; length of bill from forehead, .72, 

 from nostril, .40, along gape, .84 ; tarsus, .83 ; middle toe and claw, .70; claw 

 alone, .20; hind toe and claw, .60; claw alone, 26. 



This species is most closely related to T. rufalbus, in the white 

 under parts and banded crissum. It is, however, much smaller ; the 

 upper parts are grayish, instead of cinnamon red ; the sides of the 

 neck much more conspicuously streaked with black. The lores are 

 whitish ; the greatet coverts spotted with whitish. T. ludovicianus 

 has different nostrils ; upper parts purplish red ; beneath tinged with 

 yellowish. T. jjetenicus, besides many other differences, has the 

 tail black, the outer feathers varied only with white. The banded 

 and white crissum, more striped neck, deeper bars on the wings, etc., 

 distinguish it from modesius. 



X23,786.) Type. (34,016.) Iris brown. (29,361.) Iris brown. (31,822.) Iris reddish-brown. 



